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| author | Peter Ujfalusi <peter.ujfalusi@linux.intel.com> | 2025-06-19 11:42:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:28:18 +0200 |
| commit | 41f53afe53a57a7c50323f99424b598190acf192 (patch) | |
| tree | 1396fa358e7855c03d24e08cb5b3337c470f4274 /sound | |
| parent | 789aa0b98854d0e28ab114be2be15017d52b309f (diff) | |
| download | linux-41f53afe53a57a7c50323f99424b598190acf192.tar.gz linux-41f53afe53a57a7c50323f99424b598190acf192.tar.bz2 linux-41f53afe53a57a7c50323f99424b598190acf192.zip | |
ASoC: core: Check for rtd == NULL in snd_soc_remove_pcm_runtime()
[ Upstream commit 2d91cb261cac6d885954b8f5da28b5c176c18131 ]
snd_soc_remove_pcm_runtime() might be called with rtd == NULL which will
leads to null pointer dereference.
This was reproduced with topology loading and marking a link as ignore
due to missing hardware component on the system.
On module removal the soc_tplg_remove_link() would call
snd_soc_remove_pcm_runtime() with rtd == NULL since the link was ignored,
no runtime was created.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://patch.msgid.link/20250619084222.559-3-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/soc-core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 7eea70eea68b..dc95b6f41555 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1025,6 +1025,9 @@ component_dai_empty: void snd_soc_remove_pcm_runtime(struct snd_soc_card *card, struct snd_soc_pcm_runtime *rtd) { + if (!rtd) + return; + lockdep_assert_held(&client_mutex); /* |